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SoLOD(3IV)()							  SoLOD(3IV)()

NAME
       SoLOD --	distance-based level-of-detail switching group node

INHERITS FROM
       SoBase >	SoFieldContainer > SoNode > SoGroup > SoLOD

SYNOPSIS
       #include	<Inventor/nodes/SoLOD.h>

	  Fields from class SoLOD:

     SoMFFloat		 range
     SoSFVec3f		 center

	  Methods from class SoLOD:

			 SoLOD()
     static SoType	 getClassTypeId()

	  Methods from class SoGroup:

     void		 addChild(SoNode *child)
     void		 insertChild(SoNode *child, int	newChildIndex)
     SoNode *		 getChild(int index) const
     int		 findChild(const SoNode	*child)	const
     int		 getNumChildren() const
     void		 removeChild(int index)
     void		 removeChild(SoNode *child)
     void		 removeAllChildren()
     void		 replaceChild(int index, SoNode	*newChild)
     void		 replaceChild(SoNode *oldChild,	SoNode *newChild)

	  Methods from class SoNode:

     void		 setOverride(SbBool state)
     SbBool		 isOverride() const
     SoNode *		 copy(SbBool copyConnections = FALSE) const
     virtual SbBool	 affectsState()	const
     static SoNode *	 getByName(const SbName	&name)
     static int		 getByName(const SbName	&name, SoNodeList &list)

	  Methods from class SoFieldContainer:

     void		 setToDefaults()
     SbBool		 hasDefaultValues() const
     SbBool		 fieldsAreEqual(const SoFieldContainer *fc) const
     void		 copyFieldValues(const	SoFieldContainer  *fc,	SbBool
			      copyConnections =	FALSE)
     SbBool		 set(const char	*fieldDataString)
     void		 get(SbString &fieldDataString)
     virtual int	 getFields(SoFieldList &resultList) const
     virtual SoField *	 getField(const	SbName &fieldName) const
     SbBool		 getFieldName(const SoField *field, SbName &fieldName)
			      const
     SbBool		 isNotifyEnabled() const
     SbBool		 enableNotify(SbBool flag)

	  Methods from class SoBase:

     void		 ref()
     void		 unref() const
     void		 unrefNoDelete() const
     void		 touch()
     virtual SoType	 getTypeId() const
     SbBool		 isOfType(SoType type) const
     virtual void	 setName(const SbName &name)
     virtual SbName	 getName() const

DESCRIPTION
       This group node is used to allow	applications to	switch between various
       representations of objects automatically. The  children	of  this  node
       typically represent the same object or objects at varying levels	of de-
       tail, from highest detail to lowest. The	distance from the  world-space
       eye  point  to  the  transformed	center of the LOD is computed, and one
       child is	drawn, based on	the values in the ranges field.

       More precisely, if the distance from the	world-space  eyepoint  to  the
       transformed center is D and the ranges array contains LAST_RANGE+1 val-
       ues (numbered 0...LAST_RANGE), then:

	      if D < ranges[0]			  : Child 0 is drawn
	      else if ranges[i-1] < D <	ranges[i] : Child i is drawn
	      else if D	> ranges[LAST_RANGE]	  : Child LAST_RANGE+1 is drawn

     Thus, N ranges and	N+1 children should be specified. If you  specify  too
     few  children,  the  last child will be used for the extra	ranges.	If you
     specify too few ranges, the extra children	will never be used.

     It	is often useful	to define the lowest detail  child  to	be  an	SoInfo
     node.  This causes	the object to completely disappear if it is far	enough
     away from the eyepoint. Defining the highest detail child to be an	SoInfo
     node  can	also  be useful	if you want the	object to disappear if it gets
     too close to the eyepoint.

FIELDS
     SoMFFloat		 range
	  World-space distances	to use as switching criteria.

     SoSFVec3f		 center
	  Object-space center of the model.

METHODS
			 SoLOD()
	  Creates a distance-based level-of-detail node	with default settings.

     static SoType	 getClassTypeId()
	  Returns type identifier for this class.

ACTION BEHAVIOR
       SoGLRenderAction, SoRayPickAction, SoCallbackAction
	  Only the child with the appropriate level of detail is traversed.

     others
	  All implemented as for SoGroup.

FILE FORMAT/DEFAULTS
       LOD {
	  center  0 0 0
	  range	  [  ]
     }

SEE ALSO
       SoSwitch, SoGroup

								  SoLOD(3IV)()

NAME | INHERITS FROM | SYNOPSIS | DESCRIPTION | FIELDS | METHODS | ACTION BEHAVIOR | FILE FORMAT/DEFAULTS | SEE ALSO

Want to link to this manual page? Use this URL:
<https://www.freebsd.org/cgi/man.cgi?query=SoLOD&sektion=3iv&manpath=FreeBSD+12.1-RELEASE+and+Ports>

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